There is just no way to trust pool people. I was a little unsure of closing my pool so i figure i would pay to have the guys that put my liner in close the pool so i can watch what they do. I'm pretty sure the didnt drain enough water because the level is right below the skimmer. The returns r still under water but capped with the rubber stoppers. Is this ok? What if the stopper fails? They didnt use antifreeze cause they were confident they blew out all the water. Does this sound correct? Also they left water in the skimmer on top of the plug. I may end up draining the water myself which defeats the purpose of paying someone if ya'll tell me it needs to be done. Maybe this is just another way of closing the pool??? The cover is a black tarp like cover that i'm pretty sure will let some rain water go thru.